Comment 0 for bug 513380

At the moment bugs with zero heat have four dark grey heat icons next to them. This has a few problems:

 * colorblind users can't tell whether the flames are red or grey (this is actually reported, not speculation)
 * the icons are bold enough that they look like four things, not the absence of four things

If you want to use the common current pattern of empty or filled stars (like youtube/itunes/banshee) then the non-filled flame should be much more faint: just an icon and in a paler grey. Alternatively maybe we could just have no icons (but then where would the tooltip be.)